0.40-0.60 Cts of 5x3 mm AAA Emerald-Cut Russian Lab Created Emerald Stud Earrings in 14K Yellow Gold Beautiful surprise gift. The studs have the finest AAA quality emerald-cut Russian Lab Created Emerald each four-prong set in 14K Yellow Gold. Lab created gemstones are developed in the lab creating the same pressure and temperature, these stones have the same chemical, physical, and optical properties as natural gemstones. 30 Day No questions asked Return Policy Free-Shipping within US May Birthstone/Anniversary/Birthday Gift/Valentine's Day Gift